If Customer Satisfaction is used to measure the Current Value, when should it be measured?

If Customer Satisfaction is used to measure the Current Value, when should it be measured?
A . At least Every Sprint Review.
B. Every Release.
C. When new issues arrive.
D. Every Month.
E. Frequently.
F. Every Day.

Answer: E

Explanation:

From EBM Guide – Customer Satisfaction: Some form of sentiment analysis to help gauge customer engagement and happiness with the product. Customer satisfaction should be measured frequently enough to ensure the team is building the right thing at the right time but not so frequent it hinders the team from the work.